Matthew abnold



I 2 SheetsSheet 1.

(No Model.)

M. ARNOLD.

RIVETING MACHINE.

No. 371,659. Patented Oct. 18, 1887.

g i W lm y n W N. PEYERS.

2 Sheets-Sheet 2.

(No Model.)

M. ARNOLD.

RI-VETING MACHINE.

No. 371,659. Patented Oct. 18,1887.

Fig. -3.

' To all whom it may concern.-

UNITED STATES PATENT EEICE.

MATTHEIV ARNOLD, OF SAN FRANCISCO, CALIFORNIA.

RlVETlNG-MACHINE.

SPECIFICATION forming part ofI-etters Patent No. 371,659, dated October 18, 1887. Application filed February 2, 1887. Serial No. 226,323. (No model.)

Be it known that I, MATTHEW ARNOLD, of the city and county of San Francisco, State of California, have invented an Improvement in Riveting-Machines; and I hereby declare the following to be a full, clear, and exact description of the same.

My invention relates to certain improve ments in riveting-machines; and it consists of an elongated hopper having a peculiarly-constructed channel in the bottom, by which the hollow unflange-d rivets are placed in the proper position by the vibration of the hop per-body, a pivot or hinge which connects it with an inclined chute, through which the rivets. are delivered to a vertical guide, within which'a plunger works to set the rivets into the material which is to be secured by them. In connection with this is a stop or stops for holding the rivets, delivering them one by one beneath the plunger, and a means for raising the guide and inclined chute above the anvil to admit the material to be riveted, together with a means for agitating or oscillating the hopper about its hinged support, so as to invert the rivets contained therein and deliver them in the proper position into the inclined chute, and in certain details of construction, all of which will be more fully explained by reference to the accompanying drawings, in which- I Figure 1 is a view of my machine. Fig. 2 is a longitudinal vertical section taken through the hopper, the inclined chute, and the guide, Fig. 3 is a transverse section of the hopper. Fig. 4 is a transverse section of the chute. Fig. 5 is a section of the lower part of the guide.

My machine is especially designed for setting rivets which are formed by striking up from sheet metal, so that the rivet is made with one closed end and pointed legs projecting from this end, the outside of the rivets being smooth or fluted and having no projection or flange at the head.

A is a bed-plate or frame having an arm or standard, B, through the end of which a hole is made to receive the vertically-moving guide 0, and this guide has a hole through its center to allow the plunger D to pass through it. The operation of these parts will be hereinafter more fully explained.

The lower part of the guide is open at one side, and an inclined chute, E, is secured so that its lower end opens into the side of the guide, and it extends upward and backward at an inclination to one side of the standard B, as shown. This chute is made rectangular in transverse section and of a width just sufficient to receive the rivets when they stand in the proper position but no others are allowed to enter. To the upper end of this chute is hinged an elongated box or hopper, F, into which the rivets are delivered from any source of supply and in any suitable manner. The bottom of this box is composed of two sides sloping toward each other and meeting so as to form a central channel at the lowest point extending from one end to the other of the box. In the middle of this channel a rib or plate stands vertically, extending the whole length of the channel and in line with a similar rib or plate which extends downwardly through the inclined chute E, before mentioned. The peculiar form of my rivets, being made with a closed top and three projecting legs or points, as shown, causes them to fall upon the longitudinal rib in the box, one point lying upon one side of the rib and the other two upon the other side, while the closed top of the rivet remains upward. The rivets are then in such a position that when the box is tilted to a sufficient angle the rivets will slide out of the lower end and down upon the rib in the inclined chute, where they will remain, being held by the stop Lwhich is pivoted to the vertically-moving guide, and has one end extending into the side of the inclined chute, just above the lower end of the rib, so that the rivets will be retained by this stop until released by the proper mechanism and at the proper time.

The rivet-holding box has a mechanism connected with it and with the operating-lever handle, by which the box is caused to oscillate about its pivot or hinge, so as to change its angle about this center, and thus cause the rivets to be thrown from one end of the box to the other. This agitation of the rivets within the box causes them to eventually take their proper position upon the guide-rib within the channel at the bottom of the box, and it thus automatically places them in position to be delivered into the inclined chute, which is done at each movement of the box, which tilts it into line with the chute.

The upper end of the plunger is connected with the operating-lever K by means of an adjustable sliding joint, as shown at L, or by a link or other suitable connecting device which will allow the lever to turn about its fulcrum while the plunger moves vertically. A slot is made in one side of the guide 0, and a pin, M, projects from the plunger through this slot, so that its end extends slightly outside of the guide. The outer end of the stop 1, before described, for retaining the rivets in the inclined chute, stands in such position with relation to the slot in the guide that when the plunger moves downward, and after its lower end has passed the end of the inclined chute,

the pin M will strike the outer end of the stop, pushing it down and thus'lifting the inner end, so as to allow a rivet to slide beyond it, and this rivet will strike the side of the plunger, where it will remain as long as the plunger is down. When the plunger is raised, this rivet will slip beneath it, and will then fall astride an angular arm, N, which is hinged to one side of the guide, sothat it projects into the path of the plunger, and is held there by a spring, 0. When the plunger passes down upon the head of the rivet, it forces this arm temporarily outward, so as to allow itself to pass down; and as the rivet will be hanging astride this arm in the same manner that they hang upon the ribs of the box and chute, before described, itwill be seen that the plunger in its downward movement will force the arm back and carry the rivet forward or downward until its points rest upon the goods which are to be secured by it. This material, which may be leather or anything else, is passed beneath the end of the guide 0 and rests .upon

the anvil P.

The points of the rivets will be forced through the material by a sufficient pressure upon the plunger, and after passing through the material will strike the curved or grooved surface of the anvil, so that a continued pressure will turn these points either outward or inward,.according to the position of the curved groove in the anvil, and thus rivet them upon the opposite side of the leather or fabric. When the plunger is again raised, it first allows the swinging arm N to pass in beneath it, and as soon as it rises above the lower end of the inclined chute the single rivet, which has been resting against the side of the plunger, will slip in beneath it and fall astride of this arm. A further upward movement of the plunger causes the pin M to strike the top of the slot in the guide 0, and thus raise the guide slightly from the surface of the fabric, allowing it to be moved along to the point where the next rivet is to be inserted. This movement also produces a slight jar or agitation of the chute and the rivet-holding box, which are supported from the guide, and this jar causes the rivets to move downward and take their proper place, or loosens them if there is any inclination to stick. The first upward movement of the plunger after the rivet has been set releases the end of the stop I, and a spring, R, forces the other end of the stop downward upon the rib in the chute, thus preventing any morerivets from passing down until the one which has already passed has been disposed of. The anvil is adjusted up or down by-a screw, R.

I am aware that machines have been contrived for automatically delivering tubular or solid rivets which have a projecting flange or head, and for setting such rivets into the fabric which is to be secured. an eyeleting machine has been constructed with a hopper having a channel at the bottom for the passageof a reciprocating blade which gathers the eyelets. I'do not claim, broadly, such devices; but,

Having thus described my invention, what I claim as new, and desire to secure by Letters Patent, is-

1. The elongated rivet-holding box having the bottom made V-shaped and terminating in a central longitudinal channel at the bottom of the box, said channel being provided with a vertical rib, upon which the rivets are received and retained in proper position to be delivered to the chute, substantially as herein described.

2. The rivet-holding box having theinclined bottom,central channel,and vertical rib within the channel, said box having its forward end hinged to an inclined chute, inwhich the rivets are delivered, in combination with a mechan ismconnected with the operating-lever of the plunger, whereby the box is caused to oscillate about its hinge and agitate the rivets, so as to place them upon the guiding-rib, substantially as herein described.

3. The rivet holding and placing box having the channel and central rib, as shown, in combination with an inclined chute having a similar rib placed in line with the rib within the box, so that the rivets may be delivered in their proper position into the chute, substantially as herein described.

4. The inclined chute having the central rib, upon which the rivets are received and retained in the proper position, in combination with a vertically-moving guide, to which thechute is attached, and a stop hinged to said guide,so that one end rests upon the rib and prevents the rivets from passing, substantially as herein described.

5. Theinclined chute secured to a verticallymoving guide having an inclined rivet-guiding rib extending within it, and a stop pivoted to the guide and resting upon therib to prevent the passage of rivets, in combination with a plunger moving vertically throu'ghthe guide, and having a pin projecting through one side of the'slot in said guide, so as to strike the stop and raise it to release the rivet when the plunger is pressed downward, substantially as herein described.

6. The vertically moving' guide sliding I am also aware V when the plunger is moved downward, so that the rivet taken from the supporting-arm may be forced through the material lying upon the r 5 anvil and the points turned upward and secured, substantially as herein described.

In witness whereof I have hereunto set my hand,

MATTHEW ARNOLD.

Witnesses:

' S. H. NoURsn,

H. 0. LEE. 

